Heat recovery device for regularly-discharged drain water of waste heat boiler

Abstract

The utility model discloses a heat recovery device for regularly-discharged drain water of a waste heat boiler, and relates to the technical field of waste heat boilers. Comprising a rack and a feeding assembly, the feeding assembly comprises a feeding pipe and a connecting pipe, one end of the feeding pipe is connected with a filtering assembly, the filtering assembly is connected with the connecting pipe, the rack is connected with a heat recovery assembly, and the heat recovery assembly is connected with the connecting pipe; the heat recovery assembly comprises a first calandria and a second calandria, heat conducting fins are inserted into the first calandria, the other ends of the heat conducting fins are arranged in the second calandria, a water outlet pipe is fixedly arranged at the upper end of the second calandria, a pump is fixedly arranged at the lower end of the second calandria, and the water outlet pipe and the pump penetrate through the rack. And the pump machine is connected with a water inlet pipe. The device provided by the utility model adopts a surface convection heat exchange form, and is combined with a factory domestic hot water supply system to heat the factory domestic water, so that the final purposes of heat recovery, energy conservation and emission reduction are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of heat recovery, and in particular to a heat recovery device for a waste heat boiler with fixed drainage. Background Art

[0002] Boiler drain refers to the water condensed from steam in various steam pipes and steam-using equipment. In the actual operation of the boiler periodic sewage discharge system, many waste heat boilers discharge drains in part in the deaerator, and the unrecovered part is directly discharged to the fixed discharge expansion tank. The pressure is usually 0.1MPa and the temperature is around 150℃. After expansion and temperature reduction, it is directly discharged to the industrial wastewater pool or mechanical accelerated clarification tank. The heat of draining is wasted, and the high temperature drain also causes energy consumption in the water quality treatment process.

[0003] At present, it is necessary to design a waste heat boiler fixed-discharge drain heat recovery device to solve the above technical problems. Summary of the invention

[0004] In response to the above problems, the present application provides a waste heat boiler fixed-discharge drain heat recovery device that can achieve heat recovery, energy conservation and emission reduction.

[0005] To achieve the purpose of this application, this application provides the following technical solutions:

[0006] A heat recovery device for a waste heat boiler with fixed drainage, comprising a frame and a feed assembly, wherein the feed assembly comprises a feed pipe and a connecting pipe, one end of the feed pipe is connected to a filter assembly, the filter assembly is connected to a connecting pipe, the frame is connected to a heat recovery assembly, and the heat recovery assembly is connected to the connecting pipe;

[0007] The heat recovery component includes a first row of pipes, the first row of pipes is fixedly connected to the inner surface of the frame, the lower end of the first row of pipes is fixedly connected to the connecting pipe, the upper end of the first row of pipes passes through the frame, a heat conducting plate is inserted into the interior of the first row of pipes, a second row of pipes is fixedly provided on the inner surface of the frame, the heat conducting plate passes through the second row of pipes, the other end of the heat conducting plate is arranged inside the second row of pipes, a water outlet pipe is fixedly provided at the upper end of the second row of pipes, the water outlet pipe passes through the frame, a pump is fixedly provided at the lower end of the second row of pipes, the pump passes through the frame, and the pump is connected to a water inlet pipe.

[0008] In one possible implementation, the filter assembly includes a filter box and a fixed frame, the filter box is fixedly connected between the feed pipe and the connecting pipe, a connecting groove is provided on the upper surface of the filter box, the fixed frame is movably inserted in the connecting groove, a square plate is fixedly provided on the upper surface of the fixed frame, and the square plate is movably fitted with the upper surface of the filter box.

[0009] In a possible implementation, a limiting opening is provided on a side surface of the square plate.

[0010] In a possible implementation, a square groove is provided on the upper surface of the filter box, a spring is fixedly provided on the inner surface of the square groove, a slider is fixedly provided on the other end of the spring, an insert block is fixedly provided on the upper surface of the slider, and the insert block is movably inserted in the limit opening.

[0011] In a possible implementation, three springs are provided, and the spring array is distributed between the square slot and the slider.

[0012] In a possible implementation manner, a pull rod is fixedly provided on one side of the sliding block.

[0013] In a possible implementation, a sealing groove is provided on the upper surface of the filter box, a sealing strip is fixedly provided on the lower surface of the square plate, and the sealing strip is movably fitted to the inner surface of the sealing groove.

[0014] In a possible implementation, a plurality of heat conducting plates are provided, and an array of the heat conducting plates is distributed between the first row of tubes and the second row of tubes.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model can be introduced into the drain through the feed pipe, and the impurities in the water can be filtered through the filter plate in the filter box. The filtered drain enters the first row of pipes through the connecting pipe, and the heat in the drain can be absorbed by the heat conductive sheet. By starting the pump, the external cold water can be introduced into the second row of pipes through the water inlet pipe. The cold water contacts the heat conductive sheet, thereby taking away the heat on the heat conductive sheet. The water with heat can be introduced into the concentrated domestic water box in the factory area to achieve the ultimate purpose of heat recovery, energy saving and emission reduction.

[0017] 2. After the filter plate in the utility model has been used for a period of time, the slider can be moved by pulling the pull rod, so that the plug block can be disengaged from the limit opening, releasing the limit on the square plate, and the filter plate can be disengaged from the inside of the filter box by moving the square plate, and the dust adhering to the filter plate can be cleaned. After cleaning, the pull rod is pulled again to insert the fixed frame into the connecting groove. After releasing the pull rod, the plug block can be entered into the limit opening by the force of the spring, which is convenient for disassembly and cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation to the present application.

[0019] Figure 1 It is a schematic diagram of the structure of the utility model.

[0020] Figure 2 This is a schematic diagram of the structure of the heat recovery component of the utility model.

[0021] Figure 3 This is a schematic diagram of the structure of the filter assembly of the utility model.

[0022] Figure 4 For this utility model Figure 3 Enlarged structural diagram at A in the middle.

[0023] In the figure: 1. frame; 21. feed pipe; 22. connecting pipe; 3. filter assembly; 31. filter box; 311. sealing groove; 32. connecting groove; 33. fixing frame; 34. filter plate; 35. square plate; 351. limit opening; 36. square groove; 37. spring; 38. slider; 381. pull rod; 39. plug; 4. heat recovery assembly; 411. first rectangular duct; 42. heat conducting plate; 43. second rectangular duct; 44. pump; 45. water outlet pipe; 46. water inlet pipe. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of this application, unless otherwise specified, "plurality" means two or more.

[0026] Example 1

[0027] like Figure 1-4 As shown, the utility model provides a heat recovery device for a waste heat boiler with fixed-discharge drain, the heat recovery device for a waste heat boiler with fixed-discharge drain comprises a frame 1 and a feed assembly, the feed assembly comprises a feed pipe 21 and a connecting pipe 22, one end of the feed pipe 21 is connected to a filter assembly 3, the filter assembly 3 is connected to a connecting pipe 22, the frame 1 is connected to a heat recovery assembly 4, and the heat recovery assembly 4 is connected to the connecting pipe 22 in the frame 1.

[0028] In a possible embodiment, the heat recovery component 4 includes a first row of pipes 411, which are fixedly connected to the inner surface of the frame 1, the lower end of the first row of pipes 411 is fixedly connected to the connecting pipe 22, the upper end of the first row of pipes 411 passes through the frame 1, a heat conductive sheet 42 is inserted into the first row of pipes 411, a second row of pipes 43 is fixedly provided on the inner surface of the frame 1, the heat conductive sheet 42 passes through the second row of pipes 43, the other end of the heat conductive sheet 42 is arranged inside the second row of pipes 43, a water outlet pipe 45 is fixedly provided at the upper end of the second row of pipes 43, a plurality of heat conductive sheets 42 are provided, and the heat conductive sheets 42 are arrayed between the first row of pipes 411 and the second row of pipes 43 to assist in heat conduction, the water outlet pipe 45 passes through the frame 1, and the other end of the water outlet pipe 45 is connected to the plant domestic water collection tank, a pump 44 is fixedly provided at the lower end of the second row of pipes 43, the pump 44 passes through the frame 1, and the pump 44 is connected to a water inlet pipe 46.

[0029] In a possible embodiment, the filter assembly 3 includes a filter box 31 and a fixed frame 33, the filter box 31 is fixedly connected between the feed pipe 21 and the connecting pipe 22, a connecting groove 32 is provided on the upper surface of the filter box 31, and the fixed frame 33 is movably inserted in the connecting groove 32, a square plate 35 is fixedly provided on the upper surface of the fixed frame 33, the square plate 35 is movably fitted with the upper surface of the filter box 31, and a limited opening 351 is provided on the side of the square plate 35, a square groove 36 is provided on the upper surface of the filter box 31, and a spring 37 is fixedly provided on the inner surface of the square groove 36, and the spring 37 is provided There are three springs 37 arrayed between the square slot 36 and the slider 38 to improve the stability of the connection. The other end of the spring 37 is fixedly provided with a slider 38. The upper surface of the slider 38 is fixedly provided with an insert block 39. The cross-sectional shape of the insert block 39 is "L"-shaped. The insert block 39 is movably inserted into the limit opening 351. A pull rod 381 is fixedly provided on one side of the slider 38 to facilitate pulling the slider 38 to move. A sealing groove 311 is provided on the upper surface of the filter box 31, and a sealing strip is fixedly provided on the lower surface of the square plate 35. The sealing strip is movably fitted with the inner surface of the sealing groove 311 to improve the sealing of the connection.

[0030] The working principle of the utility model is as follows:

[0031] When the utility model is in use, the water can be introduced into the drain through the feed pipe 21, and the impurities in the water can be filtered through the filter plate 34 in the filter box 31. The filtered drain enters the first row of pipes 411 through the connecting pipe 22, and the heat in the drain can be absorbed by the heat conductive sheet 42. By starting the pump 44, the external cold water can be introduced into the second row of pipes 43 through the water inlet pipe 46. The cold water contacts the heat conductive sheet 42, thereby taking away the heat on the heat conductive sheet 42. The water with heat can be introduced into the concentrated domestic water tank in the factory area to achieve the ultimate purpose of heat recovery, energy saving and emission reduction.

[0032] After the filter plate 34 has been used for a period of time, the slider 38 can be moved by pulling the pull rod 381, so that the plug block 39 can be disengaged from the limit opening 351, releasing the limit on the square plate 35. The filter plate 34 can be disengaged from the inside of the filter box 31 by moving the square plate 35, and the dust adhering to the filter plate 34 can be cleaned. After cleaning, the pull rod 381 is pulled again to insert the fixed frame 33 into the connecting groove 32. After releasing the pull rod 381, the plug block 39 can enter the limit opening 351 through the force of the spring 37, which is convenient for disassembly and cleaning.

[0033] The beneficial effects of the embodiments of the present application are as follows:

[0034] The device provided in the present application adopts the form of surface convection heat exchange, combined with the factory's domestic hot water supply system, to heat the factory's domestic water, so as to achieve the ultimate goal of heat recovery, energy conservation and emission reduction.

[0035] The above embodiments are only used to illustrate the technical solution of the present application, but not to limit it. The present application is not limited to the exact structure described above and illustrated in the accompanying drawings, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, various changes and modifications made without departing from the concept of the present application should be deemed to belong to the protection scope of the present application.

Claims

1. A heat recovery device for a waste heat boiler with fixed drainage, comprising a frame (1) and a feed assembly, characterized in that: The feed assembly comprises a feed pipe (21) and a connecting pipe (22); one end of the feed pipe (21) is connected to a filter assembly (3); the filter assembly (3) is connected to a connecting pipe (22); the frame (1) is connected to a heat recovery assembly (4); the heat recovery assembly (4) is connected to the connecting pipe (22); The heat recovery component (4) comprises a first row of pipes (411), the first row of pipes (411) being fixedly connected to the inner surface of the frame (1), the lower end of the first row of pipes (411) being fixedly connected to the connecting pipe (22), the upper end of the first row of pipes (411) passing through the frame (1), a heat conducting plate (42) being inserted into the interior of the first row of pipes (411), a second row of pipes (43) being fixedly provided on the inner surface of the frame (1), the heat conducting plate (42) passing through the second row of pipes (43), the other end of the heat conducting plate (42) being arranged inside the second row of pipes (43), a water outlet pipe (45) being fixedly provided at the upper end of the second row of pipes (43), the water outlet pipe (45) passing through the frame (1), a pump (44) being fixedly provided at the lower end of the second row of pipes (43), the pump (44) passing through the frame (1), and a water inlet pipe (46) being connected to the pump (44).

2. The waste heat boiler fixed-discharge drain heat recovery device according to claim 1, characterized in that: The filter assembly (3) comprises a filter box (31) and a fixing frame (33); the filter box (31) is fixedly connected between the feed pipe (21) and the connecting pipe (22); a connecting groove (32) is provided on the upper surface of the filter box (31); the fixing frame (33) is movably inserted into the connecting groove (32); a square plate (35) is fixedly provided on the upper surface of the fixing frame (33); the square plate (35) is movably fitted with the upper surface of the filter box (31).

3. The waste heat boiler fixed-discharge drain heat recovery device according to claim 2, characterized in that: A limiting opening (351) is provided on the side of the square plate (35).

4. The waste heat boiler fixed-discharge drain heat recovery device according to claim 2, characterized in that: The upper surface of the filter box (31) is provided with a square groove (36), the inner surface of the square groove (36) is fixedly provided with a spring (37), the other end of the spring (37) is fixedly provided with a slider (38), the upper surface of the slider (38) is fixedly provided with an insert block (39), and the insert block (39) is movably inserted into the limiting opening (351).

5. The heat recovery device for waste heat boiler fixed-discharge drainage according to claim 4 is characterized in that: There are three springs (37), and the springs (37) are arranged in an array between the square groove (36) and the slider (38).

6. The waste heat boiler fixed-discharge drain heat recovery device according to claim 4, characterized in that: A pull rod (381) is fixedly provided on one side of the sliding block (38).

7. The heat recovery device for waste heat boiler fixed-discharge drainage according to claim 2 is characterized in that: The upper surface of the filter box (31) is provided with a sealing groove (311), and the lower surface of the square plate (35) is fixedly provided with a sealing strip, which is movably fitted with the inner surface of the sealing groove (311).

8. The waste heat boiler fixed-discharge drain heat recovery device according to claim 1, characterized in that: A plurality of heat conducting plates (42) are provided, and the heat conducting plates (42) are distributed in an array between the first row of tubes (411) and the second row of tubes (43).

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